Angel Island State Park Weather
Park • San Francisco Bay Area
Angel Island is the largest natural island in San Francisco Bay, separated from the Tiburon Peninsula by the deep channel of Raccoon Strait and reachable only by boat. California State Parks manages the whole island, with ferries from Tiburon and San Francisco and trails and a perimeter road circling old Army posts and the immigration station. Its high point, 788-foot Mount Livermore, gives a full circle of views over the bay. The island's hills stand squarely in the wind coming through the Golden Gate.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Angel Island State Park weather today and through the year
It's 55°F at Angel Island State Park right now (feels like 52°F), with 9 mph wind and a comfort score of 78. Monday's forecast high at Angel Island State Park is 56°F, 6°F below the mid November normal of 62°F. No fog in the forecast for today at Angel Island State Park. In November, 16% of morning hours here are foggy on average. The best window today is 10 AM to 1 PM, at about 52°F with a 2 mph wind (comfort 56).
September is the warmest month at Angel Island State Park, with an average high of 72°F. January is the coldest, with an average low of 44°F. December is the wettest month (5.8 in.), out of about 27.7 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Angel Island State Park are September, October, and August. The best hours are usually noon to 3 PM in September, 1 PM to 4 PM in October, and 2 PM to 5 PM in August.
Angel Island lies a few miles northeast of the Golden Gate, in the path of the steady west wind that blows through the Gate and across the island. The west and south slopes, facing the Gate and the city, take that wind and the incoming fog first. Ayala Cove, tucked on the northwest shore along Raccoon Strait opposite Tiburon, is more sheltered from it.
Forecast updated November 15, 2026 at 4:00 AM PST. Climate figures come from NOAA 1991-2020 normals. Hourly patterns come from NOAA's HRRR hourly analysis from September 2014 to April 2026.
What to expect at Angel Island State Park in the next few days
No active National Weather Service alerts for this location.
Fog
No fog in the forecast for today at Angel Island State Park. In November, 16% of morning hours here are foggy on average.
Best time to go
The best window today is 10 AM to 1 PM, at about 52°F with a 2 mph wind (comfort 56).
Hiking conditions
Best hiking day this week: Monday, with 9 daylight hours that are dry, 45 to 80°F, and under 18 mph wind. 4 of the next 7 days have at least 4 such hours.
Best day this week
Of the next 7 days, Friday looks best for Angel Island State Park, with a 59°F high and midday comfort near 77. Today looks weakest (49).
Rain
Next good chance of rain: today (73%, about 0.45 in.).
Tides (San Francisco (Golden Gate))
- High 4.4 ft at 4:47 AM today
- Low 3.6 ft at 9:14 AM today
- High 4.9 ft at 2:27 PM today
- Low 0.3 ft at 9:39 PM today
Live weather map
Weather around Angel Island State Park right now
Overcast and 55° at Angel Island State Park right now.
About the live weather map for Angel Island State Park
The map centers on Angel Island State Park and stacks fog, satellite clouds, and precipitation radar on one view. Clouds come from the GOES-West satellite and rain from NOAA radar, and both show current conditions. Fog comes from our HRRR-based fog model, and the slider steps through its forecast for the next 12 hours.
Dots mark nearby places with their current temperature, colored by comfort score. Use the layer buttons to turn any layer off, or open the full map for every destination in the region.
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Tip: Bay Area temperatures can change by 20 to 30°F over a short distance because of microclimates.
Angel Island State Park vs nearby places
Typical summer conditions compared with Angel Island State Park, from the same NOAA HRRR hourly record. The list shows the closest places, then nearby places whose climate differs the most.
| Place | Distance | Summer afternoons | Morning fog | Afternoon wind | Compared with Angel Island State Park |
|---|---|---|---|---|---|
| Tiburon | 1.5 mi | same | 27% | 15 mph | same 3 km weather-model cell, so our hourly data cannot tell them apart |
| Alcatraz Island | 2.6 mi | -3°F | 34% | 19 mph | windier summer afternoons (19 vs 15 mph) |
| Sausalito | 2.9 mi | +2°F | 19% | 16 mph | a very similar climate |
| Walnut Creek | 20.3 mi | +23°F | 11% | 8 mph | about 23°F warmer on summer afternoons and calmer summer afternoons (8 vs 15 mph) |
| Pleasant Hill | 21.1 mi | +24°F | 10% | 7 mph | about 24°F warmer on summer afternoons and calmer summer afternoons (7 vs 15 mph) |
| Concord | 23.3 mi | +24°F | 9% | 8 mph | about 24°F warmer on summer afternoons and calmer summer afternoons (8 vs 15 mph) |
Places with a climate like Angel Island State Park's
- South San Francisco (15 mi away): similar temperatures through the year
- San Bruno (16 mi away): similar temperatures through the year
- Fruitvale (13 mi away): similar temperatures through the year
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Angel Island State Park climate comparisons mean
These cards compare recent conditions at Angel Island State Park with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available. Fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.
Positive and negative differences describe how Angel Island State Park departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.
Angel Island State Park weather by month
September is the warmest month at Angel Island State Park, with an average high of 72°F. January is the coldest, with an average low of 44°F. December is the wettest month (5.8 in.), out of about 27.7 in. a year. Morning fog peaks in July, when fog or low cloud covers 33% of the hours from 6 to 10 AM. June has the clearest middays, with clouds covering about 18% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Angel Island State Park are September, October, and August. The best hours are usually noon to 3 PM in September, 1 PM to 4 PM in October, and 2 PM to 5 PM in August.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 57°F | 44°F | 5.3 in | 10 | 19% | 35% | 8 mph | 9.8 h | 32 |
| Feb | 59°F | 46°F | 5.3 in | 10 | 15% | 26% | 9 mph | 10.7 h | 35 |
| Mar | 61°F | 47°F | 3.9 in | 8 | 15% | 28% | 10 mph | 11.9 h | 57 |
| Apr | 63°F | 48°F | 1.9 in | 6 | 12% | 23% | 12 mph | 13.2 h | 64 |
| May | 66°F | 51°F | 0.8 in | 4 | 17% | 24% | 14 mph | 14.2 h | 59 |
| Jun | 70°F | 53°F | 0.2 in | 2 | 22% | 18% | 15 mph | 14.8 h | 68 |
| Jul | 70°F | 54°F | 0.0 in | 0 | 33% | 20% | 16 mph | 14.5 h | 69 |
| Aug | 72°F | 55°F | 0.1 in | 1 | 27% | 21% | 15 mph | 13.6 h | 74 |
| Sep | 72°F | 55°F | 0.1 in | 2 | 24% | 19% | 13 mph | 12.3 h | 79 |
| Oct | 70°F | 52°F | 1.3 in | 5 | 20% | 20% | 10 mph | 11.1 h | 76 |
| Nov | 62°F | 48°F | 3.0 in | 7 | 16% | 23% | 7 mph | 10.0 h | 63 |
| Dec | 57°F | 44°F | 5.8 in | 10 | 24% | 37% | 8 mph | 9.5 h | 25 |
Morning fog is the share of hours from 6 to 10 AM with fog or low cloud. Midday cloud is the average from 11 AM to 3 PM, and afternoon wind is the average from 1 to 5 PM. The highlighted rows are the most comfortable months.
What makes Angel Island State Park's weather different
When the fog burns off
11 AMwhen July fog usually thins (39% foggy at 8 AM)
Fog or low cloud covers Angel Island State Park in 39% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (12%).
When the wind picks up
1 PMwhen afternoon wind builds, March–October
From March through October, wind at Angel Island State Park typically builds after 1 PM. In July it peaks around 5 PM, averaging 17 mph with 73% of those hours windy, while mornings average 10 mph.
Model resolution
2 placesshare one 3 km NOAA HRRR grid cell
Angel Island State Park shares one 3 km grid cell in NOAA's HRRR model with Tiburon. The places in that cell range from 16 to 350 ft. The hourly fog, wind, cloud, and temperature patterns on this site are the same for both. Real differences between them come from hills, elevation, and wind exposure that the model cannot resolve.
Daylight
9.5–14.8 hof daylight, Dec to Jun
Days at Angel Island State Park range from about 9.5 hours in December to 14.8 hours in June. In mid-June the sun sets around 8:34 PM, and in mid-December around 4:55 PM.
Seasons at Angel Island State Park
- Warm seasonJul 4 – Oct 5 · highs 70°F+
The warm season lasts about 3.1 months, from Jul 4 to Oct 5, when the average high is 70°F or warmer. Highs peak around Sep 8 at about 72°F.
- Cool seasonNov 30 – Feb 26 · highs 60°F or lower
The cool season runs from Nov 30 to Feb 26, when the average high is 60°F or lower. The coldest nights come around Jan 8, with an average low near 44°F.
- Rainy seasonNov 3 – Apr 12 · 86% of the year's rain
The rainy season runs from Nov 3 to Apr 12, when a day has at least a 20% chance of measurable rain. That stretch brings 86% of the year's rain.
The dark line marks today. Season dates come from the smoothed daily NOAA 1991-2020 normals. Counting from Oct. 1, a typical year has its first inch of rain by Oct 25 and half of its annual total by Jan 22.
Days per year and extremes (Nov 1, 2024 to Oct 31, 2026)
This record runs from Nov 1, 2024 to Oct 31, 2026. Over this record, Angel Island State Park averaged 4 days a year at 90°F or hotter and no freezing nights. It averaged 15 days a year with at least half an inch of rain and 10 afternoons with wind of 20 mph or more at 2 PM. About 131 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Sep 9, 2026 (99°F) and the coldest night was Feb 20, 2026 (39°F). The wettest day was Nov 23, 2024 (2.74 in.), and the strongest 2 PM gust was 44 mph on Feb 13, 2025.
- 4days at 90°F or hotter
- 0nights at or below freezing
- 15days with ½ in. of rain or more
- 10afternoons with 20+ mph wind
- 131mornings with 3+ hours of fog or low cloud
- Hottest day99°FSep 9, 2026
- Coldest night39°FFeb 20, 2026
- Wettest day2.74 inNov 23, 2024
- Strongest 2 PM gust44 mphFeb 13, 2025
What shapes Angel Island State Park's weather
Height changes Angel Island's weather fast. On summer mornings when the marine layer, the low sheet of fog and cloud off the ocean, is shallow, Mount Livermore's summit can sit above it. The city skyline and bridge towers poke through while the shoreline below is gray. On deeper fog days the top is inside the cloud and noticeably windier and colder than the cove.
The surrounding bay keeps the island's temperatures moderate year round, with dry, often foggy summers and wet winters. By late summer and fall the grass and scrub are dry, and fire is a real concern. In October 2008 the Angel Fire burned about 40 percent of the island's wildland, and wood fires are not allowed even in campsites.
Tips for visiting Angel Island State Park
Reserve the Tiburon ferry online
Reservations are required for the ferry from downtown Tiburon, and its round-trip tickets include park admission.
Buy San Francisco ferry tickets ahead
Golden Gate Ferry runs from the San Francisco Ferry Terminal. Buy round-trip tickets before you go, since tickets aren't sold on the island.
Check winter ferry schedules
Winter weekday ferry service is limited, so confirm the schedule with the ferry operator before you go.
Allow 2.5 hours for Mount Livermore
The summit is about 2.5 miles from Ayala Cove via the Sunset Trail, roughly 2.5 hours round trip. Bikes aren't allowed on the summit trails.
Leave the dog at home
Dogs aren't allowed on the island, except service animals.
Angel Island State Park through the seasons
- Spring (March–May)
- The hills are green and the air is often clearest after late rains. The west wind builds through spring, especially on the west side and the summit.
- Summer (June–August)
- Summer is dry, with morning fog and a steady west wind through the Gate. Start hikes early on the sheltered side and save the summit for after the fog lifts.
- Fall (September–October)
- Fall usually brings the clearest days, as warm as late summer, but the grass and scrub are at their driest and fire risk peaks.
- Winter (November–February)
- Winter is the wet season, and all ferries run reduced schedules from November to March. Clear days between storms bring long views across the bay.
Activities and the weather that matters
- Hiking Mount Livermore: Climb after the morning fog has burned off or on a clear fall day. The summit is the windiest spot on the island.
- Biking the perimeter road: Bikes are allowed, riders under 18 must wear helmets, and adult bike rentals are available in season. Expect a headwind on the west side on summer afternoons.
- Camping: Sites can be reserved up to six months ahead. Wood fires are banned, so plan on a stove, and expect cool, damp nights under summer fog.
Official sources and current conditions
- California State Parks: Angel Island State Park
- Angel Island Tiburon Ferry
- Golden Gate Ferry routes and schedules
- Angel Island Conservancy: Getting there
- NOAA tide predictions: San Francisco (Golden Gate)
Numbers on this page come from NOAA data. The text draws on the official sources linked above.
Historical Climate Data
Long-term weather patterns and climate data
Data sources: Recent temperatures come from NOAA URMA and recent precipitation from NOAA Stage IV. Fog, cloud, wind, humidity, and sunshine come from NOAA HRRR, and long-term baselines from NOAA 1991-2020 climate normals.
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
🌟 Best Months to Visit
⚠️ Challenging Months
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| November 2024 | 78 | 61.6° / 49.1° | 6.4h | 5d | 4.66" | 17 |
| December 2024 | 69 | 58.2° / 48.3° | 5h | 12d | 5.97" | 11 |
| January 2025 | 82 | 59° / 45° | 7h | 5d | 0.19" | 20 |
| February 2025 | 73 | 59.9° / 46.6° | 6.6h | 6d | 7.32" | 14 |
| March 2025 | 78 | 60.4° / 46.7° | 7.9h | 3d | 1.79" | 16 |
| April 2025 | 83 | 63.2° / 48.3° | 9.8h | 6d | 0.33" | 22 |
| May 2025 | 88 | 71.1° / 51.6° | 11.9h | 5d | 0.15" | 26 |
| June 2025 | 84 | 68.5° / 51.4° | 12.3h | 12d | 0" | 21 |
| July 2025 | 81 | 66.7° / 53.6° | 11.6h | 20d | 0" | 16 |
| August 2025 | 85 | 75.6° / 56.4° | 11.1h | 11d | 0" | 24 |
| September 2025 | 84 | 73.8° / 59° | 9.6h | 11d | 0.04" | 21 |
| October 2025 | 85 | 69.5° / 54.9° | 8h | 4d | 0.95" | 24 |
| November 2025 | 75 | 62.5° / 51.9° | 6.5h | 9d | 2.9" | 11 |
| December 2025 | 61 | 54.1° / 46.6° | 4.7h | 18d | 4.83" | 4 |
| January 2026 | 77 | 60° / 48.1° | 6.8h | 4d | 3.85" | 21 |
| February 2026 | 74 | 62.2° / 49.4° | 6.1h | 5d | 4.82" | 15 |
| March 2026 | 91 | 74.8° / 54.1° | 9.7h | 3d | 0.05" | 27 |
| April 2026 | 83 | 65.4° / 50.5° | 9.2h | 4d | 3.68" | 22 |
| May 2026 | 86 | 68.2° / 52.5° | 11.5h | 10d | 0.59" | 23 |
| June 2026 | 84 | 70.8° / 54.2° | 11.9h | 14d | 0.01" | 19 |
| July 2026 | 84 | 73.3° / 55.5° | 11.5h | 9d | 0" | 22 |
| August 2026 | 80 | 70.9° / 55.6° | 10.8h | 19d | 0" | 14 |
| September 2026 | 84 | 73.5° / 56.3° | 9.9h | 11d | 0.1" | 20 |
| October 2026 | 86 | 73.8° / 54.7° | 8.4h | 4d | 0.21" | 27 |
Climate Trends
Average Temperature by Month
About the Angel Island State Park climate charts
The temperature chart compares average monthly highs and lows at Angel Island State Park, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.
Precipitation shows the total recorded or modeled rainfall for each month at Angel Island State Park. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.
Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns
Average local hour by month from 2014-09-30 to 2026-04-30
- Temperature: At Angel Island State Park, the warmest typical hour is 4 PM in September (65°F). The coldest is 7 AM in February (50°F).
- Fog: Fog or low cloud covers Angel Island State Park in 39% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (12%).
- Wind: From March through October, wind at Angel Island State Park typically builds after 1 PM. In July it peaks around 5 PM, averaging 17 mph with 73% of those hours windy, while mornings average 10 mph.
- Cloud Cover: June middays are the clearest at Angel Island State Park (18% average cloud cover), and December middays are the cloudiest (37%).
- Solar Radiation: The strongest typical sun at Angel Island State Park comes at 1 PM in June, averaging 961 W/m².
How to read the hourly heatmaps for Angel Island State Park
This heatmap shows how average temperature at Angel Island State Park changes by hour and month. Read left to right for the seasons and top to bottom for the time of day. Warmer colors mark the usual afternoon peaks, and cooler colors show overnight and winter lows.
This heatmap shows when fog or low cloud is most likely at Angel Island State Park. Darker cells mark the months and hours when fog has been most common. They help separate overnight or morning fog from cloud that tends to linger into the afternoon.
This heatmap shows the typical hourly wind pattern at Angel Island State Park through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.
This heatmap shows average cloud cover at Angel Island State Park for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.
This heatmap shows the average solar radiation reaching Angel Island State Park by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.
Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage. The red marker shows the current month and hour.
How recent months compared at Angel Island State Park
- October 2026 recap: October 2026 at Angel Island State Park averaged a high of 74°F, 4°F warmer than the 1991-2020 normal of 70°F. It brought 0.21 in. of rain, compared with a normal of 1.26 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 21.8 in. of rain to Angel Island State Park, 79% of the 27.7 in. normal.
Location Details
Angel Island State Park weather questions
Everything you need to know about weather and visiting Angel Island State Park
What is the weather like at Angel Island State Park today?
It's 55°F at Angel Island State Park right now, with a comfort score of 78 (great). Monday's forecast high at Angel Island State Park is 56°F, 6°F below the mid November normal of 62°F. The best window today is 10 AM to 1 PM, at about 52°F with a 2 mph wind (comfort 56).
What is the best month to visit Angel Island State Park?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Angel Island State Park are September, October, and August. The best hours are usually noon to 3 PM in September, 1 PM to 4 PM in October, and 2 PM to 5 PM in August. The warm season lasts about 3.1 months, from Jul 4 to Oct 5, when the average high is 70°F or warmer. Highs peak around Sep 8 at about 72°F.
What are the warmest and coldest months at Angel Island State Park?
September is the warmest month at Angel Island State Park, with an average high of 72°F. January is the coldest, with an average low of 44°F.
When does the fog burn off at Angel Island State Park?
Fog or low cloud covers Angel Island State Park in 39% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (12%).
When is it windiest at Angel Island State Park?
From March through October, wind at Angel Island State Park typically builds after 1 PM. In July it peaks around 5 PM, averaging 17 mph with 73% of those hours windy, while mornings average 10 mph.
How much rain does Angel Island State Park get?
December is the wettest month (5.8 in.), out of about 27.7 in. a year. The rainy season runs from Nov 3 to Apr 12, when a day has at least a 20% chance of measurable rain. That stretch brings 86% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 21.8 in. of rain to Angel Island State Park, 79% of the 27.7 in. normal.
What kind of place is Angel Island State Park?
Angel Island is the largest natural island in San Francisco Bay, separated from the Tiburon Peninsula by the deep channel of Raccoon Strait and reachable only by boat. California State Parks manages the whole island, with ferries from Tiburon and San Francisco and trails and a perimeter road circling old Army posts and the immigration station. Its high point, 788-foot Mount Livermore, gives a full circle of views over the bay. The island's hills stand squarely in the wind coming through the Golden Gate.
What is Angel Island State Park weather like in November?
November at Angel Island State Park averages a high of 62°F and a low of 48°F, with 3.0 in. of rain over about 7 rainy days. About 16% of morning hours are foggy. Afternoon wind averages 7 mph.
More about Angel Island State Park weather
Guides that explain the weather here and nearby
Data sources and methods
- Monthly temperatures and precipitation: NOAA 1991-2020 normals.
- Fog, cloud, wind, sun, and comfort by hour and month: NOAA's HRRR hourly analysis from September 2014 to April 2026.
- Daily records and recent months: NOAA URMA and HRRR analyses, plus NOAA Stage IV precipitation.
- Nearby comparisons and regional rankings use the same hourly HRRR summaries for every destination in the region.
- Alerts: National Weather Service. Tides and ocean temperature: NOAA CO-OPS, where shown.
- All statements on this page are computed from these datasets, apart from the “What shapes the weather” guide, which cites its sources inline.
- California State Parks, Angel Island State Park (accessed 2026-10-27)
- Angel Island Conservancy, Mt. Livermore (accessed 2026-10-27)
- Angel Island Conservancy, Natural history (accessed 2026-10-27)
- Angel Island Conservancy, Getting there (accessed 2026-10-27)
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